Every statistical test is based on certain assumptions. Some of the assumptions for parametric difference statistics include:
A) The dependent variables must be approximately normally distributed
B) Equality of variances
C) The assumption of independence
D) All of the above

Question

Quizplus · Accepted Answer

All of these assumptions are necessary for parametric difference statistics. If any of these assumptions are violated, the results of the statistical test may be inaccurate or invalid.

Every Statistical Test Is Based on Certain Assumptions